06341 - Beautiful Pyritized 1.66 Inch Unidentified Lower Cretaceous Ammonites Mammites nodosoides Iarochène

Iarochène

It preserves its lateral serrations very well defined

A new mosasaurine from the Maastrichtian (Upper Cretaceous) Phosphates of Morocco and its implications for mosasaurine systematics

This tooth

we have much of the proximal area of the vertebral column of this huge crocodile

06341 - Beautiful Pyritized 1.66 Inch Unidentified Lower Cretaceous Ammonites Mammites nodosoides IarochèneSpecimen of extreme quality. Unidentified species. His suture lines are wonderfully well detailed. It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.